In practice, however, a long period of economic growth and falling interest rates meant that for a while the trade paid off-until the debacle of 2007-08.
然而，实际上长期的经济增长和利率下降意味着暂时这个交易能够还本付息，但最终到了2007 - 2008年还是崩溃了。
However, in an interactive application, changes to data might be more dynamic; if a user is logged on for a long period of time, then he might expect changes in data to be reflected when they occur.
不过，在一个交互式应用程序中，对数据的更改可能更动态；如果用户已经登录了很长时间，那么他会希望在发生数据变更时有所反映。
However, China will remain in an under-developed stage for a long period of time. There are still many difficulties and challenges ahead of us.
同时，中国处于并将长期处于不发达的阶段，在前进的道路上仍有许多困难和挑战。
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